From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/3] tools/target_dem_fuzzer: Check fmt before dereferencing
Date: Thu, 24 Feb 2022 00:50:55 +0100
Message-ID: <20220223235057.24625-1-michael@niedermayer.cc> (raw)
Fixes: NULL pointer dereference
Fixes: 44884/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4656748688965632
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
tools/target_dem_fuzzer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/target_dem_fuzzer.c b/tools/target_dem_fuzzer.c
index 687989ccc8..32767a0182 100644
--- a/tools/target_dem_fuzzer.c
+++ b/tools/target_dem_fuzzer.c
@@ -173,7 +173,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
}
// HLS uses a loop with sleep, we thus must breakout or we timeout
- if (!strcmp(fmt->name, "hls"))
+ if (fmt && !strcmp(fmt->name, "hls"))
interrupt_counter &= 31;
if (!io_buffer_size || size / io_buffer_size > maxblocks)
--
2.17.1
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next reply other threads:[~2022-02-23 23:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-23 23:50 Michael Niedermayer [this message]
2022-02-23 23:50 ` [FFmpeg-devel] [PATCH 2/3] tools/target_dec_fuzzer: Adjust threshold for targa Michael Niedermayer
2022-03-07 23:24 ` Michael Niedermayer
2022-02-23 23:50 ` [FFmpeg-devel] [PATCH 3/3] avformat/rmdec: Better duplicate tags check Michael Niedermayer
2022-03-07 23:25 ` Michael Niedermayer
2022-02-25 21:08 ` [FFmpeg-devel] [PATCH 1/3] tools/target_dem_fuzzer: Check fmt before dereferencing Michael Niedermayer
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